require 'formula' class Fftw < Formula homepage 'http://www.fftw.org' url 'http://www.fftw.org/fftw-3.3.2.tar.gz' md5 '6977ee770ed68c85698c7168ffa6e178' def install args = ["--enable-shared", "--disable-debug", "--prefix=#{prefix}", "--enable-threads", "--disable-dependency-tracking"] # check for gfortran args << "--disable-fortran" unless which 'gfortran' # single precision # enable-sse only works with single system "./configure", "--enable-single", "--enable-sse", *args system "make install" # clean up so we can compile the double precision variant system "make clean" # double precision # enable-sse2 only works with double precision (default) system "./configure", "--enable-sse2", *args system "make install" # clean up so we can compile the long-double precision variant system "make clean" # long-double precision # no SIMD optimization available system "./configure", "--enable-long-double", *args system "make install" end end